<template>
  <div class="auth-page">
    <div class="container page">
      <div class="row">
        <div class="col-md-6 offset-md-3 col-xs-12">
          <h1 class="text-xs-center">{{ isLogin ? 'Sign in' : 'Sign up' }}</h1>
          <p class="text-xs-center">
            <nuxt-link v-if="isLogin" to="/register">Need an account?</nuxt-link>
            <nuxt-link v-else to="/login">Have an account?</nuxt-link>
          </p>

          <ul class="error-messages">
            <template v-for="(messages, filed) in errors">
               <li v-for="(message,index) in messages" :key="index">{{ filed }} {{ message }}</li>
            </template>
           
          </ul>

          <form @submit.prevent="onSubmit">
            <fieldset class="form-group" v-if="!isLogin">
              <input class="form-control form-control-lg" type="text" placeholder="Your Name" v-model="user.username"  required/>
            </fieldset>
            <fieldset class="form-group">
              <input
                class="form-control form-control-lg"
                type="email"
                placeholder="Email"
                v-model="user.email"
                required
              />
            </fieldset>
            <fieldset class="form-group">
              <input
                class="form-control form-control-lg"
                type="password"
                placeholder="Password"
                v-model="user.password"
                required
              />
            </fieldset>
            <button
              class="btn btn-lg btn-primary pull-xs-right"
            >{{ isLogin ? 'Sign in' : 'Sign up' }}</button>
          </form>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { login, register } from '@/api/user'
//仅在客户端加载 js-cookie包
const Cookie = process.client ? require('js-cookie') : undefined
export default {
  middleware: "notAuthenticated",
  name: "LoginIndex",
  computed: {
    isLogin() {
      return this.$route.name === "login";
    },
  },
  data() {
    return {
      user: {
        username:"",
        email: "",
        password: "",
      },
      errors:{}//错误信息
    };
  },
  methods: {
    async onSubmit() {
      this.errors = {}
      try {
      //提交表单登录
      const { data } = this.isLogin ? await login({
        user: this.user
      }) : await register({
        user: this.user
      })
      //保持登录状态
      this.$store.commit('setUser', data.user)
      //为了防止刷新页面数据丢失，把数据持久化
      Cookie.set('user',data.user)
      //跳转到首页
      this.$router.push('/')
      } catch (error) {
        console.dir(error);
        this.errors = error.response.data.errors
      }
     
    },
  },
};
</script>